How to use the online alarm clock
Getting ready at 5:36 pm gives you time to clear the space around the gas boiler, find any service paperwork and make sure you can hear the door. Set the alarm for when you need to stop preparing and wait near the entrance. The remaining 24 minutes are enough for those small jobs without letting the engineer’s expected arrival at 6:00 pm slip from your mind.
While you prepare for the boiler inspection, check where the alarm sound will actually play. A phone or laptop may quietly route it to headphones that are still connected, leaving the room itself silent. Disconnect them or select the built-in speaker, then test the volume once. The gas boiler visit could be missed if the browser is no longer running or the computer goes to sleep before the alert, so use a separate phone alarm as a backup if you must step away.
If you still need to travel back for the engineer, allow for late-afternoon traffic rather than judging the journey by its usual quieter duration. Around 5:36 pm, commuter queues, school-run traffic and busy junctions can stretch a short route. Check the live journey time before leaving, add a modest buffer, and aim to be indoors before 6:00 pm so parking or a delayed bus does not leave the engineer waiting.
Common questions
Do I need an account or an app?
Neither. Choose a time and a sound, press Start, and it runs in this browser tab. Nothing is downloaded, nothing is registered, and closing the page leaves nothing behind on the device.
Can I change the sound?
Yes, there is a short list of tones to pick from before you press Start. Softer sounds are easy to sleep through, so a firmer bell tends to be the safer choice for anything early in the morning.
Will it still be right when the clocks change?
Yes. It reads your device's local clock, so the move between GMT and BST at the end of March and October is picked up automatically, as long as the computer's date, time and time zone are set correctly.
Can I use this on a phone?
It works in a mobile browser, but phones lock the screen and suspend background tabs far more readily than a laptop does, which can stop the alarm sounding. For anything important, a desktop or a plugged-in laptop is the steadier option.
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